rtc: remove unnecessary error message after platform_get_irq

The function “platform_get_irq” can log an error already.
Thus omit redundant messages for the exception handling in the
calling functions.

This issue was detected by using the Coccinelle software.
Signed-off-by: Markus Elfring <elfring@users.sourceforge.net>
Acked-by: Vladimir Zapolskiy <vz@mleia.com>
Link: https://lore.kernel.org/r/04116352-b464-041c-1939-96440133aa6f@web.deSigned-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>

drivers/rtc/rtc-fsl-ftm-alarm.c

@@ -268,10 +268,8 @@ static int ftm_rtc_probe(struct platform_device *pdev)
 	}
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		dev_err(&pdev->dev, "can't get irq number\n");
+	if (irq < 0)
 		return irq;
-	}
 
 	ret = devm_request_irq(&pdev->dev, irq, ftm_rtc_alarm_interrupt,
 			       IRQF_NO_SUSPEND, dev_name(&pdev->dev), rtc);

drivers/rtc/rtc-lpc24xx.c

@@ -205,10 +205,8 @@ static int lpc24xx_rtc_probe(struct platform_device *pdev)
 		return PTR_ERR(rtc->rtc_base);
 
 	irq = platform_get_irq(pdev, 0);
-	if (irq < 0) {
-		dev_warn(&pdev->dev, "can't get interrupt resource\n");
+	if (irq < 0)
 		return irq;
-	}
 
 	rtc->clk_rtc = devm_clk_get(&pdev->dev, "rtc");
 	if (IS_ERR(rtc->clk_rtc)) {

drivers/rtc/rtc-mt2712.c

@@ -328,10 +328,8 @@ static int mt2712_rtc_probe(struct platform_device *pdev)
 	mt2712_rtc_hw_init(mt2712_rtc);
 
 	mt2712_rtc->irq = platform_get_irq(pdev, 0);
-	if (mt2712_rtc->irq < 0) {
-		dev_err(&pdev->dev, "No IRQ resource\n");
+	if (mt2712_rtc->irq < 0)
 		return mt2712_rtc->irq;
-	}
 
 	platform_set_drvdata(pdev, mt2712_rtc);